Finding the Third Proportional to 645,574 and 1,367,936

Step by Step Solution

1. Step 1: Write the proportion equation
   645,574 : 1,367,936 = 1,367,936 : x
2. Step 2: Convert to fraction form
   645,574/1,367,936 = 1,367,936/x
3. Step 3: Cross multiply
   645,574x = 1,367,936 × 1,367,936
4. Step 4: Simplify right side
   645,574x = 1,871,248,900,096
5. Step 5: Solve for x
   x = 1,871,248,900,096/645,574
6. Step 6: Final answer
   x = 2,898,581.57